Mycat HA(高可用) 与 LB(负载均衡)13

franket

发布于 2021-12-02 09:50:35

4500

发布于 2021-12-02 09:50:35

文章被收录于专栏：技术杂记

正确的写法是

#contimeout 5000
  timeout connect 5000
#clitimeout 50000
  timeout client 50000
#srvtimeout 50000
  timeout server 50000

Note: mycat官方文档中是使用 listen all_mycat 192.168.100.101:8888 的方式对ip进行绑定，但这种方式已经不被支持，如果使用这种方式，会有如下报错

[root@h101 haproxy]# /usr/local/haproxy/sbin/haproxy -f /usr/local/haproxy/haproxy.cfg
[ALERT] 063/223814 (22295) : parsing [/usr/local/haproxy/haproxy.cfg:29] : 'listen' cannot handle unexpected argument '192.168.100.101:8888'.
[ALERT] 063/223814 (22295) : parsing [/usr/local/haproxy/haproxy.cfg:29] : please use the 'bind' keyword for listening addresses.
[WARNING] 063/223814 (22295) : parsing [/usr/local/haproxy/haproxy.cfg:36] : overwriting 'timeout server' which was already specified
[ALERT] 063/223814 (22295) : Error(s) found in configuration file : /usr/local/haproxy/haproxy.cfg
[WARNING] 063/223814 (22295) : config : proxy 'all_mycat' has no 'bind' directive. Please declare it as a backend if this was intended.
[WARNING] 063/223814 (22295) : config : missing timeouts for proxy 'all_mycat'.
   | While not properly invalid, you will certainly encounter various problems
   | with such a configuration. To fix this, please ensure that all following
   | timeouts are set to a non-zero value: 'client', 'connect', 'server'.
[WARNING] 063/223814 (22295) : config : log format ignored for proxy 'all_mycat' since it has no log address.
[ALERT] 063/223814 (22295) : Fatal errors found in configuration.
[root@h101 haproxy]#

正确的写法是使用 bind

listen all_mycat
  bind *:8888
  mode tcp
  option tcplog
  balance roundrobin
    server mycat_101 192.168.100.101:8066 check port 8066 inter 5s rise 2 fall 3
    server mycat_102 192.168.100.102:8066 check port 8066 inter 5s rise 2 fall 3
  timeout server 20000

详细内容可以参考 Haproxy 配置

启动haproxy

[root@h101 haproxy]# /usr/local/haproxy/sbin/haproxy -f /usr/local/haproxy/haproxy.cfg
[root@h101 haproxy]# ps faux | grep -v grep | grep haproxy
haproxy  23083  0.0  0.0  14260   936 ?        Ss   22:43   0:00 /usr/local/haproxy/sbin/haproxy -f /usr/local/haproxy/haproxy.cfg
[root@h101 haproxy]# netstat -ant |  grep -E "(8066|9066|8888|9999|1234)"
tcp        0      0 0.0.0.0:1234                0.0.0.0:*                   LISTEN      
tcp        0      0 0.0.0.0:8888                0.0.0.0:*                   LISTEN      
tcp        0      0 0.0.0.0:9999                0.0.0.0:*                   LISTEN        
tcp        0      0 :::8066                     :::*                        LISTEN      
tcp        0      0 :::9066                     :::*                        LISTEN      
[root@h101 haproxy]#

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